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A027948 as a triangular array

1
11
121
1331
13741
1381451
138202561
13821464171
1382154976381
13821551331899291
1382155143309344129101
1382155144364674591175111

A027948 as a square array

111111111111
12333333333
1378888888
1414202121212121
15254654555555
164197133143144
1763189309364
1892344674
19129591
110175
111
1
111111111111
12333333333
1378888888
1414202121212121
15254654555555
164197133143144
1763189309364
1892344674
19129591
110175
111
1

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Last modified September 20 09:48 EDT 2024. Contains 376068 sequences. (Running on oeis4.)